[media] dvb: don't require a parameter for get_frontend

Just like set_frontend, use the dvb cache properties for get_frontend.
This is more consistent, as both functions are now symetric. Also,
at the places get_frontend is called, it makes sense to update the
cache.

Most of this patch were generated by this small perl script:

	while (<>) { $file .= $_; }
	if ($file =~ m/\.get_frontend\s*=\s*([\d\w_]+)/) {
		my $get = $1;
		$file =~ s/($get)(\s*\([^\,\)]+)\,\s*struct\s+dtv_frontend_properties\s*\*\s*([_\d\w]+)\)\s*\{/\1\2)\n{\n\tstruct dtv_frontend_properties *\3 = &fe->dtv_property_cache;/g;
	}
	print $file;

Of course, the changes at dvb_frontend.[ch] were made by hand,
as well as the changes on a few other places, where get_frontend()
is called internally inside the driver.

On some places, get_frontend() were just a void function. Those
occurrences were removed, as the DVB core handles such cases.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/media/dvb/frontends/dib3000mc.c b/drivers/media/dvb/frontends/dib3000mc.c
index d9ea21001f77..e500b8965a5f 100644
--- a/drivers/media/dvb/frontends/dib3000mc.c
+++ b/drivers/media/dvb/frontends/dib3000mc.c
@@ -632,9 +632,9 @@ struct i2c_adapter * dib3000mc_get_tuner_i2c_master(struct dvb_frontend *demod,
 
 EXPORT_SYMBOL(dib3000mc_get_tuner_i2c_master);
 
-static int dib3000mc_get_frontend(struct dvb_frontend* fe,
-				  struct dtv_frontend_properties *fep)
+static int dib3000mc_get_frontend(struct dvb_frontend* fe)
 {
+	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
 	struct dib3000mc_state *state = fe->demodulator_priv;
 	u16 tps = dib3000mc_read_word(state,458);
 
@@ -689,7 +689,7 @@ static int dib3000mc_get_frontend(struct dvb_frontend* fe,
 
 static int dib3000mc_set_frontend(struct dvb_frontend *fe)
 {
-	struct dtv_frontend_properties *fep = &fe->dtv_property_cache, tmp;
+	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
 	struct dib3000mc_state *state = fe->demodulator_priv;
 	int ret;
 
@@ -712,8 +712,6 @@ static int dib3000mc_set_frontend(struct dvb_frontend *fe)
 	    fep->code_rate_HP   == FEC_AUTO) {
 		int i = 1000, found;
 
-		tmp = *fep;
-
 		dib3000mc_autosearch_start(fe);
 		do {
 			msleep(1);
@@ -724,7 +722,7 @@ static int dib3000mc_set_frontend(struct dvb_frontend *fe)
 		if (found == 0 || found == 1)
 			return 0; // no channel found
 
-		dib3000mc_get_frontend(fe, &tmp);
+		dib3000mc_get_frontend(fe);
 	}
 
 	ret = dib3000mc_tune(fe);